Leaves are attached by their 'petiole' (word of the day during class) to the twigs, which are attached to branches, which are attached to the tree's trunk. We were moving on to bigger things; multiple leaves, fruits and branches!
For this exercise I picked a branch that had a few leaves and a small apple. The leaves were a bit dry and their color a bit faded, but the apple was spotted with reds, yellows and greens. Making it wonderful subject to paint.